Not to stir the pot more but I was talking to the GH rep (assume everyone, especially if it's coming from the rep's mouth, has a bias) and when I was bringing up the potential health issues with paclo the reassured me that they have spent the past year and around 2 million in testing this to make sure that it wasn't a health risk for consumers.
Now, whether or not there is any truth to this, I think it's important to recognize that regardless of whether or not a product contains the same ingredient, are there grades or levels of refinement that would change it's potential health issues? Kind of like Iso-Butane vs N-Butane?